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ValentinkaMS [17]
3 years ago
5

Solve for the exact value simplified 5/7=x/10

Mathematics
2 answers:
Licemer1 [7]3 years ago
7 0

5/7=x/10

Cross multiply

(5)(10)=50

(7)(x)=7x

7x=50

Divide by 7 for both sides

7x/7=50/7

x=50/7 or x=7 1/7

Answer: x=50/7 or x=7 1/7

elena-s [515]3 years ago
3 0

Answer:

x = \frac{50}{7}

Step-by-step explanation:

With fractions, you can cross multiply

\frac{5}{7} =\frac{x}{10}\\10*5 = 7*x\\50 = 7x\\x = \frac{50}{7}

Double check:

\frac{5}{7} =\frac{\frac{50}{7}}{10}\\\frac{5}{7}=\frac{50}{700}=\frac{5}{7}

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14, 15 and 16 please
WARRIOR [948]
14). (Take π value as 22/7)
circumference = 66in
2πr = 66in
2×22/7×r = 66
r = 66×7/2×22
r = 21/2in
d = 2r => d = 2×21/2
therefore diameter of the circle = 21in

15). (Take π value as 3.14)
Circumference = 3.14m
2πr = 3.14m
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r = 3.14/3.14×2
r = 1/2m
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16). (Take π value as 22/7)
Circumference = 33km
2πr = 33km
2×22/7×r = 33
r = 33×7/2×22
r = 21/4
d = 2r
d = 2×21/4
d = 21/2km
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4 0
3 years ago
The United States is about the only country that still uses the units feet, miles, and gallons. However, you might see some car
Black_prince [1.1K]

Answer: 4.5 \text{ miles per gallon}

Step-by-step explanation:

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\text{1 liter}=\dfrac{1}{3.785}\text{ gallon}

1 liter of gasoline = 0.729 kg

Then, \text{1 kg}=\dfrac{1}{0.729}\text{ liter}

\Rightarrow\ \text{1 kg}=\dfrac{1}{0.729}\times\dfrac{1}{3.785}\text{gallon}

Now, the fuel efficiency of car will be :

7.6\times\dfrac{1}{0.729}\times\dfrac{1}{3.785}\times\dfrac{1}{0.609}\\\\=4.52275317827\approx4.5 \text{ miles per gallon}

Hence,  the car’s fuel efficiency in miles per gallon= 4.5

3 0
3 years ago
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